Ore or rock breaking machine.



No. 646,204. Patented-Mar. 27, I900.

- E. COMEHFORD.

ORE 08 ROCK BREAKING MACHINE.

(Application filed Apr. 29; 1899.) ,(No Mpdel.) 2 Sheets$heet I.

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No. 646,204. Patented mar/27, I900. E. comanroan.

ORE 68 ROCK BRE'AKINGMAGHINE. (Application and Apr. .29, 1399. (No Model.) 2 Shasta-Sheet 2.

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UNITED STATES PATENT -EEiCE.

EDWARD COMERFORD, or LIVERPOOL, ENGLAND.

ORE OR ROCK BREAKING MACHINE.

SPECIFICATION forming part of Letters Patent No. 646,204, dated March 27, 1900.

Application filed April 29, 1899.

.To all whom iv may concern.-

Be it known that I, EDWARD OOMERFORD, a subject of the Queen of England, and a resident of Liverpool, England, have invented certain new and useful Improvements in Ore or Rock Breaking Machines, of which the following is a specification.

This invention has reference to machiner for breaking rock, ore, or the like of, the type in which a rotating barrel is mounted on a vertical shaft which revolves, the barrel being disposed within a stationary outer hopper or case and the revolving and stationary parts being respectively-coned or tapered inward and outward from below.

Aceordingto this invention in a machine. of this type the vertical shaft of the machine I the machine, and Fig. 2 is a plan in section 30 taken half at the line A A and half at theline B B, Fig. 1.

Referring now to the drawings, a is the vertical shaft, e is the crushing-barrel on this shaft, and t is the outer case or body. The bodyt'is coned and has an inner lining t" with an internally ribbed or roughened surface, while the rotating barrel 6 is also coned, as described, in the opposite direction and has a ribbed or roughened outer surface, and the material to be crushed is introduced into the eccentric funnel-shaped space between the roughened surfaces of i and e.

The shaft ct is mounted by a footstep-bearing 1) below, supported in the frame 0 of the machine, and in an upper bearing 6? above the crushing-barrel e, which is supported from the hopper t of, and fastened to, the upper edge of the body i by three radial arms (one of which is seen and marked d) and a ring (1 cast in one piece and fitting in between the fastening-flange of the hopper t and the case 1'. This flange holds by an inwardly-project- $erial No. 714,972. (No model.)

ing ledge (as shown) the liner 't' in position in t by resting on its upper ledge.

The shaft or passes through the crushingbarrel e and carries it loosely upon it, and at this part it is provided with a cylindrical portion a the axis of which is eccentric to the bearing-axes of the shaft a, and also its axis is disposed at an inclination as well as eccentric to the axis of a, and the degree of eccen tricity of e to the axis of a is greater at the lower endor base than at the upper end. The crushing-barrel 6 being itself circular in cross-section and its exteriorisurface con-.

centric with the axis of the. hole or bore in which the shaft portion a lies, the eccentricity of the outer surface of cis of course due to the eccentricity of the portion on. However,

it is to be understood that the construction by which the eccentricity of the outersurface of e is obtained is not restricted to that just described and shown. On the lower part of the shaft a there is a driving bevel-gear wheel f, and meshing with itisanotherbevel-pinion f on a shaft g, which is driven by belt or other suitable gearing.

It will be seen from this description that as regards this type of machine, the shaft to is truly concentric with the general axis of'the machine and is mounted in simple bearings below and above, and thereby the bearings, mountings, and mode of operating the shafts, such as are usually employed in this type of machine, and their costliness, intricacy and difliculty of repair and upkeep are obviated,

while as regards effect, the result and action due to this eccentric andinclined disposition of the crushing-barrel, as described, is equivalent to that of the other machines both in its mode of action on the material and results.

With regard to the base 0 of the machine this is generally of the usual type, and the action is similar to that of the ordinary ma- 'chine,-namely, the rock, ore, or other matter to be crushed is introduced above by way of the hopper i into the larger eccentric annulus between the liner 2" and the barrel e, and it is discharged through the smaller eccentric annulus between the lower edges of these two parts into the discharge-troughc below.

What is claimed in respect of the hereindescribed invention is In a rock, ore, or analogous breaking machine, the outer conical body having its axis said barrel-bearing portion a, is greater than vertical, an inner loosely-mounted crushingthe eccentricity of the upper part, substanbarrel e, and a vertical operating-shaft a, havtially as set forth. ing its bearing-axes at the upper and lower In witness whereof I have hereunto set my 5 ends concentric with the axis of the bfidyfi hand in presence of two witnesses.

and having an eccentric portion a on w ic H 1 the said crushing-barrel e is mounted and EDWARD COMERB free to revolve, with its axis inclined outward .Vituesses: from the upper end toward the lower end, JOHN H. \VALKER, IO whereby the eccentricity of the lower part of J NO. V. BROWN. 

